Typescript report on the Glyncymmer, Treshenkin and Glenavon collieries, Glamorgan, by William Galloway, with financial information, statistics, notes, a map and a plan.

Typescript report by William Galloway on the Glyncymmer, Treshenkin and Glenavon collieries and their seams and shale, with statistics, notes, a map and cross sections of seams.